QTL for cold tolerance at booting stage of rice and its physiological function

Research Project

Project/Area Number	23780012
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Multi-year Fund
Research Field	Crop science/Weed science
Research Institution	Iwate University
Principal Investigator	SHIMONO Hiroyuki 岩手大学, 農学部, 准教授 (70451490)
Project Period (FY)	2011 – 2012
Project Status	Completed (Fiscal Year 2012)
Budget Amount *help	¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000) Fiscal Year 2012: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000) Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords	食用作物 / 冷害 / 耐冷性 / イネ / QTL解析 / 受精構成要素
Research Abstract	Cold damage has been one of the major problems for rice production in northern Japan. Effective screening for new cold tolerance cultivar such as maker-basis is strongly required. The present study aimed to identify the QTL of cold tolerance of highly cold tolerant cultivar Tohoku PL-3" (PL3) and clarify the physiological functions of QTL. The recombinant inbred lines of 215 lines (F_8) between PL3 and Akihikari" (weak tolerance) were used for analysis. We found significant QTL on chromosome 5 and 12 for spikelet sterility induced by low temperature at the booting stages. The QTL at the chromosome 12 has a role for maintaining anther length at low temperature and the QTL at the chromosome 5 has a role for maintaining higher efficiency for fertilization specific anther length.

Report

(3 results)